In this study, we designed a new type of electric separation system based on carbon membrane. With electrochemically switched ion exchange (ESIX) on the membrane electrode, lead ions was adsorbed or desorbed, achieving continuous separation of low concentration lead ions connected with the liquid road system. In the experiment, the effect of electrode potential, initial concentration of lead ions and pH value of the regenerated liquid on the separation were investigated, and the separation performance of the membrane electrode was evaluated. The results show that when the membrane electrode was applied potential, the adsorption and desorption efficiency increased by 2.2 times and 2.3 times respectively compared with the unapplied potential. As adsorption/desorption potential increased to 0.5 V and 1.1 V respectively, the adsorption and desorption efficiency increased, and the lead ion in the solution concentration after carbon membrane treatment was 0 mg/L when potential was applied, the removal rate was 100%. As the initial concentration of lead ions increased, the adsorption capacity of lead ions increased. The regeneration experiment results show the removal efficiency was as high as 99% when pH=3.